McDonald’s to take on Starbucks with retro-style stores called CosMc’s

New restaurants - serving more complex, customisable drinks - will be trialled in the US

McDonald's is launching a new kind of restaurant, CosMc's, a retro-style store with treats and customisable drinks including s'mores cold brew", churro frappes" and turmeric latte" that could rival chains such as Starbucks.

The fast food company said it would open its first pilot site in a Chicago suburb near its headquarters this month, as part of efforts to solve the 3pm slump", when it gets fewer customers between the lunch and dinner rush.